<template>
  <div class="list" ref="wrapper">
    <div class="container">
      <div class="area">
        <div class="tittle border-topbottom">您的位置</div>
        <div class="button-list">
          <div class="button-wrapper">
            <div class="button">{{this.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="tittle border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper" v-for="item of hot" :key="item.id" @click="handleCityClick(item.name)">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(item, key) of cities" :key="key" :ref="key">
        <div class="tittle border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom" v-for="innerItem of item" :key="innerItem.id" @click="handleCityClick(innerItem.name)">{{innerItem.name}}</div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import BScroll from 'better-scroll'
import { mapState, mapMutations } from 'vuex'

export default{
  name: 'CityList',
  props: {
    hot: Array,
    cities: Object,
    firstLetter: String
  },
  methods: {
    handleCityClick (cityName) {
      this.changeCity(cityName)
      this.$router.push('/')
    },
    ...mapMutations(['changeCity'])
  },
  computed: {
    ...mapState(['city'])
  },
  watch: {
    firstLetter () {
      const element = this.$refs[this.firstLetter][0]
      // console.log(element)
      this.scroll.scrollToElement(element)
    }
  },
  mounted () {
    this.scroll = new BScroll(this.$refs.wrapper)
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .border-topbottom
    &:before
      border-color #CACACA
    &:after
      border-color #CACACA
  .border-bottom
    &:before
      border-color #CACACA
  .list
    overflow hidden
    position absolute
    top 1.78rem
    left 0
    right 0
    bottom 0
    .tittle
      line-height .44rem
      background-color #EEEEEE
      padding-left .2rem
      color #666666
      font-size .26rem
    .button-list
      overflow hidden
      padding .1rem .6rem .1rem .1rem
      .button-wrapper
        float left
        width 33.33%
        .button
          margin .1rem
          padding .1rem 0
          text-align center
          border .02rem solid #CACACA
          border-radius .06rem
    .item-list
      padding .1rem 0
      .item
        line-height .76rem
        padding-left .2rem
        color #666666
</style>
